Question

At a pressure of 760 torr and temperature of $273\text{K}$, the indicated volume of which system is not consistent with the observation

• A. $14\text{g of}{N}_2+8\text{g of}{O}_2;\text{volume}=22.4\text{L}$
• B. $4\text{g of}He+44\text{g of}C{O}_2;\text{volume}=44.8\text{L}$
• C. $7\text{g of}{N}_2+36\text{g of}{O}_3;\text{volume}=22.4\text{L}$
• D. $17\text{g of}N{H}_3+36.5\text{g of}HCl;\text{volume}=44.8\text{L}$

Answer 1

The correct option is A $14\text{g of}{N}_2+8\text{g of}{O}_2;\text{volume}=22.4\text{L}$

Pressure P = 760 torr = 1 atm
T = 273 K
Total moles, n = $\frac{14}{28}$ + $\frac{8}{32}$ = 0.75 mol
Using ideal gas equation, PV = nRT
V = $\frac{nRT}{P}$ = $\frac{0.75\times 0.0821\times 273}{1}$ = 16.8 L
So option (a) is inconsistent.
Rest all options are consistent.